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MX2014009770A - Easy open woven plastic bags. - Google Patents

Easy open woven plastic bags.

Info

Publication number
MX2014009770A
MX2014009770A MX2014009770A MX2014009770A MX2014009770A MX 2014009770 A MX2014009770 A MX 2014009770A MX 2014009770 A MX2014009770 A MX 2014009770A MX 2014009770 A MX2014009770 A MX 2014009770A MX 2014009770 A MX2014009770 A MX 2014009770A
Authority
MX
Mexico
Prior art keywords
bag
cut
wall
side wall
cover
Prior art date
Application number
MX2014009770A
Other languages
Spanish (es)
Other versions
MX352800B (en
Inventor
Jacobo Bazbaz
Original Assignee
Polytex Fibers Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/372,211 external-priority patent/US9845184B2/en
Application filed by Polytex Fibers Corp filed Critical Polytex Fibers Corp
Publication of MX2014009770A publication Critical patent/MX2014009770A/en
Publication of MX352800B publication Critical patent/MX352800B/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D29/00Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
    • B65D29/02Sacks with laminated or multiple walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024Woven fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74Auxiliary operations
    • B31B50/81Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827Tear-lines provided in a wall portion
    • B65D75/5833Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5838Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827Tear-lines provided in a wall portion
    • B65D75/5833Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5844Tear-lines provided in a wall portion for tearing out a portion of the wall the portion of the wall being a narrow strip, e.g. between lines of weakness

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Bag Frames (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

A woven laminated plastic bag having an easy open feature is provided. The easy open feature is generally defined by a weakened portion in the bag. In various aspects the bag can be fabricated from woven polypropylene and/or polyethylene layer which can be laminated with a film layer, can form a pinch bottom bag, and can have one or both sides include graphics and/or printing. The bag can also provide a top end and/or a bottom end either or both of which provide a discrete area which may contain discrete graphics and/or printing.

Description

PLASTIC BAGS WITH EASY OPENING Field of the Invention The present disclosure relates to plastic bags with better opening characteristics.
Background of the Invention Conventional plastic bags of a variety of sizes and shapes are used in various situations. Bulk materials, such as flour, sugar, rice, seeds, animal feed, chemicals, powdered materials or the like, for example, have been commonly packaged in plastic bags woven in the past. Pet food, poultry seeds and other products sold in retail stores have not been commonly packaged in conventional woven plastic bags. Among other reasons for this, woven plastic bags were considered too rudimentary to be printed with high quality graphics suitable for the type of packaging intended for the consumer. In addition, the high-speed requirements in filling and packaging operations limited the use of woven bags in these applications.
Laminated woven sacks (LWS) were developed using a woven polypropylene structure laminated to a bioriented polypropylene film (BOPP) that can be printed on the back with the high quality graphics suitable for the type of packaging intended for the consumer. The LWS provide a stronger and more attractive bag than the more conventional multi-walled bags used for that purpose over the past 20 years. Due to its robust sturdy construction, conventional LWS bags are commonly closed when sewing at both ends. These LWS have recently been successful and have been successfully replaced by conventional multi-walled paper bags used in the pet food industry for many years.
An important disadvantage of the stitched LWS has been the closing of bags in production lines for high-speed filling, such as those for filling such bags with pet food. Experience has shown that sewing production lines are commonly slower than filling multi-walled folded bottom bags. In addition, sewn bags do not provide a pleasant aesthetic or show useful cleaning at the ends of the bags, thereby making it difficult for consumers to identify or find a desired brand quickly when the bags are displayed on shelves at the point of sale, as when they stack. In addition, the stitched ends required the puncture of the plastic bags and therefore, resulted in a bag that is not sealed, which leads to a somewhat reduced shelf life and possible infestation of the contents of the bag. Thus, there is a need for sacks folded laminated fabrics that overcome these disadvantages in the filling and closing operations while allowing a visualization of the attractive graphics of the ends of the bags in the retail store and also the supply of a durable resistant bag that remains sealed.
A major disadvantage of the newly developed folded laminated bottom woven bag, however, is that it does not include an easy opening feature that allows the consumer or buyer to quickly and easily open the bag without the use of scissors or knives. There is a need for such a folded woven sack with a folded bottom which is easy to open without the use of scissors, knives or other similar instruments, and which does not require the use of excessive force.
Woven plastic bags have been used and are conventional for certain applications. An example of a conventional woven plastic bag is provided in American Patent Number 4,373,979 ("the '979" patent), published on February 15, 1983. The' 979 patent describes the use of woven polyethylene or polypropylene strips of high density mostly oriented longitudinally in a bag construction in which the bag is formed of a stitched tube made of woven plastic material. The stitched tube has reinforcements on either side and, when a portion is cut from the rest of the tube, a bag having two open unsealed ends is provided. The '799 patent describes the use of spot welding ultrasonic to seal the portions of a bag made of such woven plastic strips, as compared to sewing the seams of a bag or using a hot-melt glue to seal the reinforcement that forms the fold. Thus, the '979 patent is incorporated herein by reference herein. The '979 patent is intended to be an improvement for sealing a plastic bag. As noted in the '979 patent, sewing an end tends to be slow, thus adding time to the manufacturing process. In addition, ends sewn into a conventional bag tend to be a weak portion of the bag, and a likely location for tears, tears, and subsequent loss of contents during storage, shipping and handling. In addition, such bags may not provide sufficient protection against the infestation of bugs and / or insects.
Another example of the plastic bags is disclosed in the US Patent Application Publication Number US 2010/0029455 A1 ("the publication '455"), published on February 4, 2010, which describes the production of fabric sections of a flexible fabric material that is provided with detachment lines by means of the laser beam process at the distance of the length of the fabric sections that will be formed. The detachment lines weaken the flexible fabric material, but do not result in complete separation of the fabric sections from the fabric material, which occurs after the tearing of flexible fabric material. The publication '455 is incorporated by reference in this document.
More recently, some types of plastic bags have provided improvements in sealing the ends of the bags. For example, in the American Patent Number 6,800,051 B2 ("the '051 patent"), published on October 5, 2004, describes a process for sealing bags with lateral folds made of plastic film. According to the '051 patent, a fabric of the plastic tubular film is cut to provide a stepped separation along a perforation, so that a wall (eg, the front wall) projects beyond the opposite wall. (for example, the back wall). The projection portion of the first wall is then folded and sealed to the opposite wall by means of a plastic glue such as a polyurethane or hot melt adhesive. The '051 patent is hereby incorporated by reference herein. However, such bags involve plastic films, non-woven plastic materials, and therefore, can not handle the weight loads of conventional bulk bags made of paper and other materials. Such bags are useful for only certain light content, such as bread.
There are a variety of conventional ways to provide reusable openings in the bags. For example, American Patent Number 6,478,465 B 1 ("the patent '465"), published on November 12, 2002, discloses a peelable opening in a pouch construction with an open top part having a multi-wall pleated bottom. The '465 patent also discloses the use of an adhesive layer that can be used so that the bag opening can be closed again. The '465 patent is incorporated herein by reference herein.
In other types of conventional plastic bags, such as those used in retail and grocery stores, it is known to use the weakened portion provided by means of one or more perforations in the wall of the plastic bag. A number of methods have been considered in relation to such bags, which include those shown in American Patent Number 5, 188,235 (the '235 patent), published on February 23, 1993, as well as in the Patent Application Number.
American Published US 2005/0087542 A1 (the '542 application), published on April 28, 2005, in the American Patent Number 5,979,655 (the' 655 patent), published on November 9, 1999, and in the Application Number of US Published Patent US 2006/0072856 (the '856 application), published on April 6, 2006. However, none of these bags are woven bags, let alone bags with multiple layers. The '235 patent, the' 655 patent, the '542 application, and the' 856 application are incorporated herein by reference.
Commonly, woven and non-woven bags are sealed with a fold single or double at each end with the tape over the single or double fold, sewing at both ends, or with a zipper at one end and a single or double fold at the other end. However, the opening of woven and some non-woven bags has proved difficult, due to the strength of the bag. Therefore, woven and non-woven bags that are easier to open, do not add much cost or time to manufacture, and are not susceptible to tearing, puncture, inadvertent fracture, or the like are necessary.
Brief Description of the Invention The present disclosure provides the woven and non-woven plastic bags comprising an easy-open feature, which make the presently disclosed knitted and non-woven plastic bags easier to open than conventional woven and non-woven plastic bags.
The present disclosure provides a bag comprising a front wall, a back wall, an interior surface, an exterior surface, an upper end, a lower end, a first layer and a second layer, each of the front wall and the wall rear has an inner surface, an outer surface, an upper end and a lower end, where the first layer comprises a polymer and the second layer comprises a polymer bonded to the first layer, and where the bag comprises an easy opening feature located in the front wall of the bag, the back wall of the bag, or a combination of them. The first layer may comprise a woven polymer, including, but not limited to, polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. The second layer may comprise a polymeric film, including, but not limited to, polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof, or paper or a portion of coated paper suitable for printing graphics of high quality on it, or a combination of a polymer film and a convenient portion of paper to have high quality printing graphics on it. The second layer may alternatively comprise an oriented polymeric film, including, but not limited to, oriented polypropylene, biaxially oriented polypropylene, oriented polyethylene, biaxially oriented polyethylene, oriented polyethylene terephthalate, biaxially oriented polyethylene terephthalate, oriented polyamide, biaxially oriented polyamide , or any combination thereof. The first layer and the second layer can be laminated together. Therefore, in certain aspects the first layer may consist or consist essentially of a woven polymer and the second layer may consist or consist essentially of a film.
In general, the easy opening feature comprises a weakened area. The weakened area may comprise a cut that has a first end and a second end, where the cut it penetrates through at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. In certain aspects, the cut may comprise a line or an open form, including, but not limited to, a carat, a semicircle, an open square, or an open rectangle. The weakened area may further comprise a plurality of perforations extending from the first end or the second end of the cut, where the plurality of perforations penetrates through at least a portion of the front wall of the bag, of the rear wall of the bag, or a combination thereof. In various aspects, the plurality of perforations extends approximately 5%, approximately 10%, approximately 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, approximately 85%, approximately 90%, approximately 95% or approximately 99% of a distance through the front wall of the bag, the back wall of the bag, or a combination thereof. In certain embodiments, the plurality of perforations extends from the first end of the cut to the second end of the cut. The plurality of perforations may extend around one or more walls of the bag, or it may alternatively be extended to form a shape, which includes, but is not limited to, a circle, a triangle, a square or a rectangle. The shape can be comprised in a single wall of the bag, or it can extend over the adjacent walls of the bag. In addition, a plurality of perforations may extend from the first end of the cut and a plurality of perforations may extend from the second end of the cut. The plurality of perforations may extend from the first end of the cut and from the second end of the cut about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40% , about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75% > approximately 80% or approximately 85% > , approximately 90% > , approximately 95% > or approximately 99% of a distance through the front wall of the bag, the back wall of the bag, or a combination thereof, or may be extended to constitute a shape, including, but not limited to, a circle, a triangle, a square or a rectangle. Again, the shape can be included in a single wall of the bag, or it can extend over the adjoining walls of the bag.
The weakened area may also comprise a first cut that has a first end and a second end and a second cut that have a first end and a second end. In particular embodiments, the first cut and the second cut intersect, for example, they comprise an "X" shape, or the first cut and the second cut comprises the parallel lines. The weakened area may further comprise a third cut, and the first cut, the second cut and the third cut are connected, for example, where the first cut, the second cut and the third cut comprise an "H" shape (or a "H" shape oblique to observe the bag with the upper end of the bag up). The weakened area may further comprise a plurality of perforations extending from the first end and the second end of the first cut, and a plurality of perforations extending from the first end and the second end of the second cut, where the plurality of perforations it penetrates through at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. The plurality of perforations extending from the first end and the second end of the first cut and the plurality of perforations extending from the first end and the second end of the second cut may comprise the parallel lines or the intersecting lines. In various embodiments, the plurality of perforations may extend from the first end and the second end of the first cut and from the first end and the second end of the second cut about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60% about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance through the front wall of the bag, of the back wall of the bag, or a combination thereof.
The weakened area may alternatively comprise a plurality of perforations penetrating through at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. The plurality of perforations can form a line extending about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50% about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance through the front wall of the bag, of the back wall of the bag, or of a combination thereof. The plurality of perforations may also constitute a shape, including, but not limited to, a circle, an oval, a triangle, a square or a rectangle. In other aspects, the plurality of perforations forms a first line and a second line, which may be approximately parallel and extend approximately 5%, approximately 10%, approximately 15%, approximately 20%, approximately 25%, approximately 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 15 99% of a distance through the front wall of the bag, the back wall of the bag, or a combination thereof. In addition, the weakened area may comprise a deformation in at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. For example, the weakened area may comprise a split mark.
The easy opening feature can be included within the first layer or second layer of the bag. The bag may further comprise an adhesive flange which covers at 25 minus a portion of the easy opening feature or the Full easy opening feature. The adhesive tab may comprise a piece of tape, and may also comprise the printing, for example, of the addresses to open the easy-opening feature or a promotional coupon.
In certain embodiments, the lower end of the bag is sealed using conventional means. For example, at least a single fold portion of the lower end of the front wall and the back wall of the bag can be sealed to the outer surface of the front wall or back wall of the bag, using an adhesive seal , a heat seal, an adhesive lamination, an extrusion lamination, a seam, ultrasonic energy, pressure, tape, or any combination thereof. Alternatively at least a portion of a double fold of the lower end of the front wall and the back wall of the bag can be sealed to the outer surface of the front wall or the back wall of the bag. However, in certain aspects, at least a portion of the lower end of the rear wall, or the entire lower end of the rear wall, projects beyond the lower end of the front wall. Thus, the lower end portion of the rear wall projecting beyond the lower end of the front wall can be sealed to the external surface of the lower end of the front wall. Additionally, the upper end of the bag can be sealed using conventional means. For example, at least a portion of a single Bending of the upper end of the front wall and the back wall of the bag can be sealed to the external surface of the front wall or back wall of the bag, using adhesive sealing, heat sealing, adhesive lamination, extrusion lamination, sewing , ultrasonic energy, pressure, tape, or any combination thereof. Alternatively at least a portion of a double fold of the upper end of the front wall and the back wall of the bag can be sealed to the external surface of the front wall or the back wall of the bag. However, in certain aspects, at least a portion of the upper end of the rear wall, or the entire upper end of the rear wall, projects beyond the upper end of the front wall. Thus, the upper end portion of the rear wall projecting beyond the upper end of the front wall can be sealed to the outer surface of the lower end of the front wall. The upper end and / or the lower end of the bag can also comprise the seam therethrough.
In certain embodiments, the bag further comprises a first side wall having an inner surface, an outer surface, an upper end and a lower end, and a second side wall having an inner surface, an outer surface, an upper end and an outer surface. Lower end. The first side wall and / or the second side wall may comprise reinforcements. In certain aspects at least one The lower end portion of the rear wall projects beyond the lower end of the first side wall, the lower end of the second side wall, and the lower end of the front wall. In an exemplary manner for sealing the lower end of such bags, the lower end portion of the rear wall projecting beyond the lower end of the first side wall, the lower end of the second side wall, and the lower end of the front wall can be sealed to the external surface of the lower end of the front wall. In additional aspects, at least a portion of the upper end of the front wall projects beyond the upper end of the first side wall, the upper end of the second side wall and the upper end of the rear wall. In these aspects the upper end portion of the bag projecting beyond the upper end of the first side wall, the upper end of the second side wall and the upper end of the rear wall can be sealed to the outer surface of the upper end of the back wall.
Alternatively, a portion of the lower end of the rear wall can project beyond the lower end of the first side wall and the lower end of the second side wall, and a portion of the lower end of the first side wall and the lower end of the wall. second side wall can project beyond the lower end of the front wall. In an exemplary manner to seal the lower end of such bags, the lower end portion of the rear wall projecting beyond the lower end of the first side wall and the lower end of the second side wall, and the lower end portion of the first side wall and the lower end of the second side wall. The second side wall projecting beyond the lower end of the front wall can be sealed to the outer surface of the lower end of the front wall. In other aspects, at least a portion of the upper end of the front wall projects beyond the upper end of the first side wall and the upper end of the second side wall, and the upper end of the first side wall and the end The upper side of the second side wall projects beyond the upper end of the rear wall. In these aspects, the portion of the front wall projecting beyond the upper end of the first side wall and the upper end of the second side wall, and the upper end portion of the first side wall and the upper end of the Second side wall projecting beyond the upper end of the rear wall can be sealed to the external surface of the upper end of the rear wall. In the particular embodiments, the upper end and the lower end of the bag are sealed, as set forth above, and the bag comprises at least ten pounds (4.5 kg) by weight of a bulk article. In certain aspects, such sealed bags may comprise six printable surfaces.
The bag may further comprise a third layer comprising a polymer placed between the first layer and the second layer. The third layer may comprise a woven polymer, including, but not limited to, polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. The third layer may alternatively comprise a polymeric film, which includes, but is not limited to, polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof. The third layer may further comprise an oriented polymeric film, including, but not limited to, oriented polypropylene, biaxially oriented polypropylene, oriented polyethylene, biaxially oriented polyethylene, oriented polyethylene terephthalate, biaxially oriented polyethylene terephthalate, oriented polyamide, biaxially oriented polyamide , or any combination thereof.
The present disclosure further provides a bag comprising a front wall, a back wall, a first side wall, a second side wall, an interior surface, an exterior surface, an upper end, a lower end, a first layer and a second layer , the front wall, the rear wall, the first side wall and the second side wall have an inner surface, an outer surface, an upper end and a lower end, where the first layer comprises a polymer and the second layer comprises a bound polymer to first layer, and wherein the bag comprises an easy opening feature located on the front wall of the bag, the back wall of the bag, the first side wall of the bag, the second side wall of the bag, or any combination of the same. The easy opening feature can be located on the front wall, the rear wall, the first side wall, the second side wall, or any combination thereof.
The present disclosure also provides a bag comprising a front wall, a back wall, an interior surface, an exterior surface, an upper end, a lower end and a first layer, each of the front wall and the rear wall have a inner surface, an outer surface, an upper end and a lower end, wherein the first layer comprises a woven polymer, and wherein the bag comprises an easy opening feature located in the front wall of the bag, the back wall of the bag, or a combination thereof. The first layer may comprise polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. The bag may further comprise a second layer, which may comprise a polymeric film.
The present disclosure further provides a method for manufacturing an easy opening feature in a woven polymer bag, which comprises creating a weakened area in the woven polymer bag. The stage of creating a weakened area it may further comprise making a cut, a plurality of perforations, or marking a line on a portion of the surface of the bag.
The present disclosure provides bags comprising a front wall, a back wall, an interior surface, an exterior surface, an upper end, a lower end, a first layer and a second layer, each of the front wall and the wall rear has an inner surface, an outer surface, an upper end and a lower end, where the first layer comprises a woven polymer and the second layer comprises a film bonded to the first layer, and where the bag comprises an easy opening feature that comprises a cover with a first weakened area, the feature of easy opening is located on a second weakened area in the front wall of the bag, the back wall of the bag, or a combination thereof. In certain embodiments, the first layer comprises polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. In other embodiments, at least a portion of the second layer comprises an area printed thereon. In other embodiments, the second layer comprises polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof or paper. In other embodiments, the second layer comprises oriented polypropylene, polypropylene biaxially oriented, oriented polyethylene, biaxially oriented polyethylene, oriented polyethylene terephthalate, biaxially oriented polyethylene terephthalate, oriented polyamide, biaxially oriented polyamide, coated paper or any combination thereof. In the additional embodiments, the bags further comprise a third layer between said first layer and said second layer. In particular embodiments, the third layer is a glue. In other embodiments, the first layer and the second layer are laminated together. In still other embodiments, the first layer, the second layer and the third layer are laminated together.
In certain embodiments, the easy opening feature comprises a cover having a first surface and a second surface and a glue on at least a portion of the first surface, the second surface, or both. In some embodiments, the first and / or the second weakened area comprises a cut having a first end and a second end, where the cut penetrates through at least a portion of the bag or cover. In the particular modalities, the cut comprises a carat, a semicircle, an open square, or an open rectangle. In other embodiments, the first and / or the second weakened area further comprises a second cut having a first end and a second end. In other modalities the first cut and the second cut intersect. In other modalities more, the first cut and the second cut comprise an "X" shape. In other embodiments, the first cut and the second cut comprise parallel lines. In still other embodiments, the first and / or the second weakened area further comprise a third cut. In some embodiments, the first cut, the second cut and the third cut comprise an "H" shape. In some embodiments, the pouches further comprise a plurality of perforations extending from the first end and / or the second end of the cut, where the plurality of perforations penetrate through at least a portion of the pouch or cover. In certain embodiments, the plurality of perforations extends about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance through the bag or the cover.
In other embodiments, the first and / or the second weakened area comprises a plurality of perforations penetrating through at least a portion of the bag or cover. In particular embodiments, the plurality of perforations forms a line. In some modalities, the plurality of perforations extends about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, approximately 65%, approximately 70%, approximately 75%, approximately 80%, approximately 85%, approximately 90%, approximately 95% or approximately 99% of a distance through the bag or the cover. In other embodiments, the plurality of perforations defines a shape. In still other embodiments, the plurality of perforations defines a first line and a second line.
In certain other embodiments, the first and / or the second weakened area comprises a deformation in at least a portion of the bag or the cover. In other embodiments, the first or second weakened area further comprises a split mark. In other embodiments, the first weakened area comprises a cut having a first end and a second end or a plurality of perforations, wherein the cut or plurality of perforations penetrates through at least a portion of the cover, or a deformation in at least a portion of the cover, and the second weakened area comprises a cut having a first end and a second end or a plurality of perforations, wherein the cut or the plurality perforations penetrates through at least a portion of the bag, or a deformation in at least a portion of the bag.
In additional embodiments, the cover comprises a polymer, a film, a glue, a paper, or any combination thereof. In certain embodiments, the bags further comprise a second cover that covers at least a portion of the weakened area of the cover. In particular embodiments, the second cover covers the entire weakened area of the cover. In other embodiments, the second cover comprises a polymer, a film, an adhesive, a paper, or any combination thereof. In other embodiments, the cover and the second cover comprise the same material, width, color, transparency or strength as the second cover, while in other embodiments, the cover and the second cover comprise a different material, width, color, transparency or resistance than the second cover. In some embodiments, the second cover comprises a piece of tape. In the additional embodiments, the second cover comprises printing, as when the second cover comprises a coupon.
In certain embodiments, a simple fold of the lower end of the front wall and the back wall of the bag is sealed to the outer surface of the front wall of the bag. In other embodiments, the lower end of the bag is sealed using adhesive sealing, heat sealing, adhesive lamination, extrusion lamination, sewing, ultrasonic energy, pressure, tape, or any combination thereof. In other embodiments, a double fold of the lower end of the front wall and the back wall of the bag is sealed to the outer surface of the front wall of the bag. In the further embodiments, at least a portion of the lower end of the rear wall projects beyond the lower end of the front wall. In such embodiments, the lower end portion of the rear wall projecting beyond the lower end of the front wall can be sealed to the external surface of the lower end of the front wall.
In the further embodiments, the bags further comprise a first side wall having an inner surface, an outer surface, an upper end and a lower end, and a second side wall having an inner surface, an outer surface, an upper end and a lower end, where the first side wall and the second side wall further comprise the reinforcements. In other embodiments, at least a portion of the lower end of the rear wall projects beyond the lower end of the first side wall, the lower end of the second side wall, and the lower end of the front wall. In still other embodiments, the lower end portion of the rear wall projecting beyond the lower end of the first side wall, the The lower end of the second side wall, and the lower end of the front wall, is sealed to the outer surface of the lower end of the front wall. In other embodiments, at least a portion of the lower end of the rear wall projects beyond the lower end of the first side wall and the lower end of the second side wall, and the lower end of the first side wall and the end bottom of the second side wall projecting beyond the lower end of the front wall, and where the lower end portion of the rear wall projecting beyond the lower end of the first side wall and the lower end of the second wall lateral, and the lower end portion of the first side wall and the lower end of the second side wall projecting beyond the lower end of the front wall, are sealed to the external surface of the lower end of the front wall. In still other embodiments, at least a portion of the upper end of the front wall projects beyond the upper end of the first side wall and the upper end of the second side wall, and the upper end of the first side wall and the second side wall, and The upper end of the second side wall projects beyond the upper end of the rear wall.
In the particular embodiments, the upper end and the lower end of the bag are sealed, and the bag comprises at least ten pounds (4.5 kg) by weight of a filling material. In other embodiments, the bags further comprise a fourth layer comprising a polymer between the first layer and the second layer. In certain embodiments, the fourth layer comprises a woven polymer, including, but not limited to, polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. In other embodiments, the fourth layer comprises a polymeric film, including, but not limited to, polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof. In the additional modalities, at least the portions of the outer surfaces of each of the front wall and the rear wall comprise a plurality of the discrete areas that additionally comprise printing thereon. In certain other embodiments, a portion of the front wall and a portion of the rear wall combine to form a discrete portion of the bag located at or near the upper end or lower end, where the discrete portion of the bag comprises the impression about it. In yet other embodiments, at least a portion of the front wall or the rear wall projects beyond a corresponding portion of the other, thereby defining a folded bottom bag at the upper end or lower end of the bag. bag.
The present disclosure further provides methods for manufacturing a woven polymer bag with a characteristic easy to open, comprising joining a cover with a first weakened area on a second weakened area of the woven polymer bag. In certain embodiments, the first and / or the second weakened area is a cut, a plurality of perforations, or a marked line. The present disclosure further provides bags comprising a front wall, a back wall, a first side wall, a second side wall, an interior surface, an exterior surface, a first end, a second end, a first layer and a second layer , the front wall, the rear wall, the first side wall and the second side wall having an inner surface, an outer surface, a first end and a second end, wherein the first layer comprises a woven polymer and the second layer comprises a film laminated to the first layer, wherein the first end of the front wall projects beyond the first end of the first side wall and the first end of the second side wall, and the first end of the first side wall and the first end of the second side wall project beyond the first end of the rear wall, where the bag comprises the impression on the front wall, the first to the side wall, the rear wall, the second side wall, the first end, the second end, or any combination thereof, and wherein the bag comprises an easy opening feature comprising a cover comprising a first weakened area located on a second weakened area on the front wall of the bag, the back wall of the bag, the first side wall of the bag, the second side wall of the bag, or any combination thereof, and a second cover located on the first weakened area Of the cover.
The present disclosure also provides bags comprising a front wall, a back wall, a first side wall, a second side wall, an interior surface, an exterior surface, a first end, a second end, a first layer and a second layer , the front wall, the rear wall, the first side wall and the second side wall have an inner surface, an outer surface, a first end and a second end, where the first layer comprises a woven polymer and the second layer comprises a film laminated to the first layer, wherein the first end of the front wall projects beyond the first end of the first side wall and the first end of the second side wall, and the first end of the first side wall and the first end of the second side wall projects beyond the first end of the rear wall, where the bag comprises the print on the front wall, the first to the side wall, the rear wall, the second side wall, the first end, the second end, or any combination thereof, and where the bag comprises a weakened area in the front wall of the bag, the back wall of the bag , the first side wall of the bag, the second side wall of the bag, or any combination thereof, and a cover located over the weakened area of the bag.
An object of the invention is to provide a woven plastic bag that is more resistant than bags made of plastic films, but easier to open than conventional woven bags.
Another object of the invention is to provide a woven plastic bag that includes an easy opening feature and still provides strength and durability, reducing the potential for ripping, damage, infestation, and loss of content.
Yet another object of the invention is to provide a woven bag that can be manufactured more quickly and therefore, is less expensive than conventional bags, and that has an easy opening feature that makes the opening of the woven bag easier than the opening of conventional woven bags.
Still another object of the invention is to provide a woven polymer bag that provides a high-quality and attractive graphic representation on at least one end of the bags when displayed or presented at the point of sale.
These and other objects of the invention will be apparent to those skilled in the art from the following detailed description.
Brief Description of the Drawings Figure 1 shows a bag with an easy opening feature comprising a square cut through the bag located near the upper end of the bag according to one embodiment of the present disclosure.
Figure 2 shows a bag with an easy opening feature comprising a carat cut through the bag located near the lower end of the bag according to one embodiment of the present disclosure.
Figure 3 shows a bag with an easy opening feature comprising a semicircular cut through the bag located near the upper end of the bag according to one embodiment of the present disclosure.
Figure 4 shows a tab comprising a promotional coupon according to one embodiment of the present disclosure.
Figure 5 shows a bag with an easy opening feature comprising a square cut through the bag located near the lower end of the bag according to one embodiment of the present disclosure.
Figure 6 shows a folded cut bag with an easy opening feature comprising a square cut through the bag located near the lower end of the bag according to one embodiment of the present disclosure.
Figure 7 shows a folded cut bag with an easy opening feature comprising a square cut through the bag located near the upper end of the bag according to one embodiment of the present disclosure.
Figure 8 shows a sketch of a folded cut bag with an easy opening feature comprising a square cut through the bag located near the lower end of the front panel of the bag according to one embodiment of the present disclosure.
Figure 9 shows a sketch of a folded cut bag with an easy opening feature comprising a square cut through the bag located near the upper end of the front panel of the bag according to one embodiment of the present disclosure.
Figure 10 shows a sketch of a folded cut bag with an easy opening feature comprising a carat cut through the bag located near the upper end of a side panel of the bag and extending through the side panel according to one embodiment of the present disclosure.
Figure 11 shows a sketch of a folded cut bag with an easy opening feature comprising a carat cut through the bag located near the upper end of a side panel of the bag and extending through the bag. full length of the bag according to one embodiment of the present disclosure.
Figure 12 shows a sketch of a cutting bag folded with an easy opening feature comprising a carat cut through the bag located near the upper end of a side panel of the bag and extending through the side panel and the front panel of the bag in accordance with a modality of the present disclosure.
Figure 13 shows a sketch of a folded cut bag with an easy opening feature comprising a bidirectional square cut through the bag located near the upper end of the front panel of the bag and spread on both side panels according to a modality of the present disclosure.
Figure 14 shows a rear side view of a folded cut bag according to one embodiment of the present disclosure.
Figure 15 shows a front side view of a folded cut printed bag with an easy opening feature comprising a square cut through the bag located near the upper end of the bag according to one embodiment of the present disclosure.
Figure 16 shows a cross-sectional view of an upper end or a lower end portion of a folded cut bag according to one embodiment of the present disclosure.
Figure 17 shows an isometric view of a folded cut bag according to one embodiment of the present divulgation.
Figure 18 shows a flush cut bag with an easy opening feature comprising a cover located near the bottom end of the bag with an "H" cut through the cover according to one embodiment of the present disclosure.
Figure 19 shows a bag with an easy opening feature comprising a cover located near the lower end of the bag with a carat cut through the cover according to one embodiment of the present disclosure.
Figure 20 shows a flush cut bag with an easy opening feature comprising a first cover located near the lower end of the bag with an "H" cut through the first cover and a second cover over the cut in "H" through the first cover according to one embodiment of the present disclosure.
Figure 21 shows a bag with an easy opening feature comprising a first cover located near the lower end of the bag with a carat cut through the first cover and a second cover over the cut of the carat through the first cover according to one embodiment of the present disclosure.
Figure 22 shows a folded cut bag with an easy opening feature comprising a cover located near the lower end of the bag having a full cut in the form of a triangle or a carat through the cover according to one embodiment of the present disclosure.
Figure 23 shows a bag with an easy opening feature comprising a cover located near the lower end of the bag having an "H" cut through the cover according to one embodiment of the present disclosure.
Figure 24 shows a folded cut bag with an easy opening feature comprising the first cover located near the lower end of the bag having a full cut in the form of a triangle or a carat through the first cover and the second cover over the complete cut according to one embodiment of the present disclosure.
Figure 25 shows a bag with an easy opening feature comprising a first cover located near the lower end of the bag having an "H" cut through the first cover and a second cover over the "H" cut. according to one embodiment of the present disclosure.
Detailed description of the invention Referring first to Figure 1, the front side view of a 1 a bag modality is shown. The bag 1 a has a front wall 10, a rear wall 1 1, a first side wall 12, a second side wall 13, a upper end 14, and a lower end 15. It will be evident, however, that the orientation of the ends 14 and 15 of the bag is unimportant and the references "top" and "bottom" are useful but may change depending on the orientation in which the bag is observed. As shown in Figure 1, the upper end 14 is considered a "flush cut" because the upper ends of the front wall 10 and the rear wall 1 1 are cut so that the upper ends of the wall front 10 and rear wall 1 1 are essentially "flush" with each other; they have substantially the same length. In addition, as shown in Figure 1, the lower end 15 is considered a "folded cut" because the lower end of the front wall 10 is longer than the lower end of the rear wall 1 1. The bag 1 a also comprises an easy opening feature 20 near the upper end 14 of the bag 1 a, which in this embodiment comprises a full cut 21 in a rectangular shape having a first end 21 a and a second end 21 ba through the front wall 10 of the bag 1 a, a first row of perforations 22 extending from the first end 21 a of the cut 21, a second row of perforations 23 extending from the second end 21 b of the cut 21, an optional third row of perforations 24 connecting the end of the first row of perforations 22 and the second row of perforations 23, a cover 25 over the cut 21 and the rows of perforations 22, 23 and 24, and a flange 26 attached to the cover 25. Although in this embodiment the easy opening feature 20 is located near the upper end 14 of the bag 1 a and the flange is located near the second side wall 13 The person skilled in the art will understand that the easy opening feature 20 could also be in the opposite orientation, with the flange located closest to the first side wall 12, resides in any orientation near the lower end 15 of the front wall 10 of the bag 1 a, or resides in the orientation near the upper end 14 or the lower end 15 in the rear wall 1 1 of the bag 1 a. The complete cut 21 can be formed by drilling, cutting, or through the use of a laser, or by any other technique known to those skilled in the art. The easy opening feature 20 (in this embodiment the cut 21 and / or the first 22 and / or the second 23 row of perforations) provides a portion of the bag 1 to which it is weakened. This weakened portion can be opened with less force than required to open or tear other portions of the bag 1 a.
Bag 1 a can be opened by pulling tab 26, which removes cover 25 and bag portion 1 a defined by cut 21 and first, second, and third row of perforations 22, 23, and 24 , respectively. Although not shown in this embodiment, it is understood that the complete cut 21 may be larger or smaller, and that it may extend to a greater or lesser extent, and that the first and second rows of perforations 22 and 23, respectively, can be extended at any distance from the first end and the second end, respectively, of the cut to the opposite side wall of the bag, for example 50%, 75%, 90% or approximately 100% 5 the distance from the ends of the cut to the opposite side of the bag. Furthermore, although not shown in this embodiment, the cover 25 can cover less than the full extent of the first and second row of perforations, at any distance the rows of perforations extend through the front wall of the bag, and in certain embodiments it covers only the entire portion of the cutout of the easy opening feature 20. The cover may comprise a polymer, a film, an adhesive, paper, or any combination thereof. Although not shown in Figure 1, the cut 21 and the first, the second 15, and the third row of perforations 22, 23, and 24 may comprise a first cover and a second cover, or a plurality of covers. In addition, the tab 26 may comprise the black and white and / or color printing (not shown), for example, a coupon (not shown), and may also be used to close the bag again.
Referring to Figure 2, the front side view of another embodiment of a bag 1 b is shown. The bag 1 b also has a front wall 10, a rear wall 1 1, a first side wall 12, a second side wall 13, a top end 25 for a flush cut 14, and a lower end of a folded cut 15. bag 1 b also comprises an easy opening feature 20, which in this embodiment is near the lower end 15 of bag 1 b and comprises a full cut 21 in a triangular or carat form having a first end 21 a and a 5 second end 21 b with the front wall 10 of the bag 1 b, a first row of perforations 22 extending from the first end 21 a of the cut 21, a second row of perforations 23 extending from the second end 21 b of the cut 21 , an optional third row of perforations 24 which connects the end of the first row of perforations 22 and the second row of perforations 23, a cover 25 over the cut and rows of perforations, and a flange 26 attached to the cover 25.
Referring to Figure 3, the front side view 15 of another embodiment of a bag 1 c is shown. The bag 1 c also has a front wall 10, a rear wall 1 1, a first side wall 12, a second side wall 13, a top end of the flush cut 14, and a lower end of a folded cut 15. The bag 1 c also comprises a feature of easy opening 20 , which in this embodiment is near the upper end 14 of the bag 1 c and comprises a complete cut 21 in a semicircular shape having a first end 21 a and a second end 21 ba through the front wall 10 of the bag 1 c, a first row of perforations 22 extending 25 from the first end 21 a of the cut 21, a second row of perforations 23 extending from the second end 21 b of the cut 21, an optional third row of perforations 24 connecting the end of the first row of perforations 22 and the second row of perforations 23, a cover 25 over the cut and 5 rows of perforations, and a flange 26 attached to the cover 25.
Referring to Figure 4, there is shown an alternate embodiment of a cover 25 and the flange 26, where the cover 25 is on the full cut 21 in a semicircular shape having a first end 21 a and a second end 21 b, but does not cover the full extent of the first row of perforations 22 and of the second row of perforations 23, and does not cover the third row of perforations 24. In this embodiment, the tab 26 includes instructions for opening the bag, but may also comprise 15 the printing in black and white and / or in color (not shown), for example, a promotional coupon (not shown).
Referring to Figure 5, the front side view of yet another embodiment of a bag 1 d is shown. The bag 1 d also has a front wall 10, a rear wall 1 1, a first side wall 12, a second side wall 13, an upper end of the flush cut 14, and a lower end of a folded cut 15. The bag 1 d also comprises an easy opening feature 20, which in this embodiment is close to the lower end 15 of the bag 1 d and comprises a complete cut 21 in 25 a rectangular shape having a first end 21 a and a second end 21 ba through the front wall 10 of the bag 1 d, a first row of perforations 22 extending from the first end 21 a of the cut 21, a second row of perforations 23 extending from the second end 21 b of the cut 21, an optional third row of perforations 24 connecting the end of the first row of perforations 22 and the second row of perforations 23, a cover 25 over the cut and rows of perforations, and a flange 26 attached to the cover 25 Referring to Figure 6, the front side view of a "folded-cut" bag embodiment 100a is shown. As shown in Fig. 6, the bag 100a has a first folded cut or upper end 105 and a second folded cut or lower end 1 10. Again, it will be evident, however, that the orientation of the ends 105 and 1 of the bag is unimportant and the references "top" and "bottom" are useful but may change depending on the orientation in which the bag is observed. The bag 100a has a wall or a front surface 108 with the upper end 16, a wall or a rear surface 106, and two side walls 102 and 103. Those skilled in the art will appreciate that conventional techniques can be used to provide lateral reinforcements. in the bag 100a for each of the sides 102 and 103 during this training process. The first end 105 of the bag 100a has the portions 1 12a and 1 12b of the wall or the rear surface 108 of the bag extending beyond the body of the bag 100a than the portions 1 14a and 1 14b of the material of the bag 100a forming the lateral reinforcements for the sides 102 and 103. In addition, the portions 1 14a and 1 14b of the lateral reinforcements extend beyond the body of the bag 100a as the upper end 16 of the front wall 108 of the bag 100a. As shown in Figure 6, the front wall 108 of the bag 100a has an end portion 16 at the first end 105 of the bag that does not extend as far from the body of the bag 100a as the end portions 14a and 14a. 1 14b of the lateral reinforcements or the end portions 1 12a and 1 12b of the rear wall of the first end 105 of the bag 100a. The bag 100a also comprises an easy opening feature 120 near the upper end 105 of the bag 100a, which in this embodiment comprises a full cut 121 in a rectangular shape having a first end 121 a and a second end 121 ba through the front wall 108 of the bag 100a, a first row of perforations 122 extending from the first end 121 a of cut 121, a second row of perforations 123 extending from second end 121 b of cut 121, an optional third row of perforations 124 connecting the end of the first row of perforations 122 and the second row of perforations 123, a cover 125 over the cut and rows the perforations, and a flange 126 attached to the cover 125.
Referring to Figure 7, the side view is shown front of another embodiment of a "folded cut" bag 100b. As shown in Figure 7, the bag 100b has a first folded cut or an upper end 105 and a second folded cut or a lower end 1 10. The bag 100b has a wall or a front surface 108 with the upper end 1 16, a wall or a rear surface 106, and two side walls 102 and 103. The first end 105 of the bag 100b has the portions 1 12a and 1 12b of the wall or rear surface 108 of the bag that extend further beyond the body of the bag 100b having the portions 1 14a and 1 14b of the material of the bag 100 forming the lateral reinforcements for the sides 102 and 103. In addition, the portions 1 14a and 1 14b of the lateral reinforcements extend further beyond the body of the bag 100b than the upper end 16 of the front wall 108 of the bag 100b. As shown in Figure 7, the front wall 108 of the bag 100b has an end portion 16 at the first end 105 of the bag that does not extend as far from the body of the bag 100b as the end portions 14a and 14a. 1 14b of the lateral reinforcements or the end portions 1 12a and 1 12b of the rear wall of the first end 105 of the bag 100b. The bag 100b also comprises an easy opening feature 120, which in this embodiment is near the lower end 1 10 of the bag 100b and comprises a full cut 121 in a rectangular shape having a first end 121a and a second end 121b through of the front wall 108 of the bag 100b, a first row of perforations 122 extending from the first end 121 a of the cut 121, a second row of perforations 123 extending from the second end 121 b of the cut 121, an optional third row of perforations 124 connecting the end of the first row of perforations 122 and of the second row of perforations 123, a cover 125 over the cut and rows of perforations, and a flange 126 attached to the cover 125.
Referring to Figure 8, there is shown a plan view of a substantially flat sheet embodiment of the material from which a "folded cut" bag 100c will be formed. The front wall 108, the rear wall 106, the first side 102 having the reinforcing portion 1 14 a, the second side 103 having the reinforcing portion 1 14 b, the seam 104, the upper end 105 and the rear end 105 are shown in the sheet. the lower end 1 10. The easy opening feature 120 is also shown, which in this embodiment is near the lower end 1 10 of the front wall 108 of the bag 100c and comprises a full cut 121 in a rectangular shape having a first end 121 a and a second end 121 ba through the front wall 108 of the bag 100c, a first row of perforations 122 extending from the first end 121 a of the cut 121 through the front wall 108 of the bag 100a, a second row of perforations 123 extending from the second end 121 b of the cut 121 through the front wall 108 of the bag 100c, an optional third row of perforations 124 connecting the end of the first row of perforations 122 and the second row of perforations 123, a cover 125 over the cut 121 and rows of perforations, and a flange 126 attached to the cover 125.
Referring to Figure 9, a plan view is shown of another embodiment of a substantially flat sheet of material from which a "folded cut" bag 100d will be formed. The front wall 108, the rear wall 106, the first side 102 having the reinforcement portion 1 14a, the second side 103 having the reinforcing portion 1 14b, the seam 104, the upper end 105 and the lower end 1 10. The easy opening feature 120 is also shown, which in this embodiment is near the upper end 105 of the front wall 108 of the bag 100d and comprises a full cut 121 in a rectangular shape having a first end 121 a and a second end 121 ba through the front wall 108 of the bag 100d, a first row of perforations 122 extending from the first end 121 a of the cut 121 through the front wall 108 of the bag 100d, a second row of perforations 123 extending from the second end 121 b of the cut 121 through the front wall 108 of the bag 100d, an optional third row of perforations 124 connecting the end of the first row of perforations 122 and the second row of perforations 123, a cover 125 over the 25 cut 121 and rows of perforations, and a flange 126 attached to cover 125.
Referring to Figure 10, a plan view is shown of another embodiment of a substantially flat sheet of material from which a "folded cut" bag 100e will be formed. The front wall 108, the rear wall 106, the first side 102 having the reinforcing portion 1 14 a, the second side 103 having the reinforcing portion 1 14 b, the seam 104, the upper end 105 and the rear end 105 are shown in the sheet. the lower end 1 10. The easy opening feature 120 is also shown, which in this embodiment is near the upper end 105 of the second side 103 of the bag 100e and comprises a full cut 121 in a carat form having a first end 121 a and a second end 121 ba through the second side 103 of the bag 100e, a first row of perforations 122 extending from the first end 121 a of the cut 121 through the second side 103 of the bag 100e, a second row of perforations 123 extending from the second end 121 b of the cut 121 through the second side 103 of the bag 100e, an optional third row of perforations 124 connecting the end of the first row of perforations 122 and the second row of perforations 123, and a cover 127 on the cut 121 and a small portion of the first row of perforations 122 and the second rows of perforations 123.
Referring to Figure 11, a plan view of another embodiment of a substantially planar sheet of the material from which a "folded cut" bag 100f will be formed. The front wall 108, the rear wall 106, the first side 102 having the reinforcing portion 1 14 a, the second side 103 having the reinforcing portion 1 14 b, the seam 104, the upper end 105 are shown in the sheet. and the lower end 1 10.
Also shown is the easy opening feature 120, which in this embodiment is near the upper end 105 of the second side 103 of the bag 100f and comprises a full cut 121 in a carat form having a first end 121 and a second end. 121 ba through the second side 103 of the bag 100f, a first row of perforations 122 extending from the first end 121a of the cut 121 through the second side 103, the front wall 108, the first side 102 and the back wall 104 of bag 100f, a second row of perforations 123 extending from second end 121b of cut 121 through second side 103, front wall 108, first side 102 and back wall 104 of the 10Of bag, an optional third row of perforations 124 connecting the end of the first row of perforations 122 and 20 of the second row of perforations 123, and a cover 127 on the cut 121 and a small portion of the first row of perforations 122 and the second row of perforations 123.
Referring to Figure 12, there is shown a plan view of another embodiment of a substantially flat sheet of material from which a "folded cut" bag will be formed. 100g The front wall 108, the rear wall 106, the first side 102 having the reinforcing portion 1 14 a, the second side 103 having the reinforcing portion 1 14 b, the seam 104, the upper end 105 and the rear end 105 are shown in the sheet. the lower end 1 10. The easy opening feature 120 is also shown, which in this embodiment is near the upper end 105 of the second side 103 of the bag 100g and comprises a complete cut 121 in a carat form having a first end 121 a and a second end 121 ba through the second side 103 of the bag 100g, a first row of perforations 122 extending from the first end 121 a of the cut 121 through the second side 103, of the front wall 108 and in the first side 102 of the bag 100g, a second row of perforations 123 extending from the second end 121b of the cut 121 through the second side 103, the front wall 108 and the first side 102 of the bag 100g, an optional third ra row of perforations 124 connecting the end of the first row of perforations 122 and the second row of perforations 123, and a cover 127 on the cut 121 and a small portion of the first row of perforations 122 and the second row of perforations 123.
Referring to Figure 13, a plan view is shown of another embodiment of a substantially flat sheet of material from which a "folded cut" bag 100h will be formed. In the sheet there is shown the front wall 108, the rear wall 106, the first side 102 having the reinforcement portion. 1 14a, the second side 103 having the reinforcing portion 1 14b, the seam 104, the upper end 105 and the lower end 1 10. The easy opening feature 120 is also shown, which in this embodiment is near the upper end 105 of the front wall 108 of the bag 100h and comprises a bidirectional full cut 121 in a square shape having a first end 121 a, a second end 121 b, a third end 121 c and a fourth end 121 through the front wall 108 of the bag 100h, a first row of perforations 122 extending from the first end 121a of the cut 121 through the front wall 108 and on the first side 102 of the bag 100h, a second row of perforations 123 which is extends from the second end 121 b of the cut 121 through the front wall 108 and on the first side 102 of the pouch 100h, an optional third row of perforations 124 connecting the end of the first row of perforations 122 and of the second row of perforations 123, a fourth row of perforations 122a extending from the third end 121 c of the cut 121 through the front wall 108 and on the second side 103 of the bag 100h, a fifth row of perforations 123a extending from the fourth end 121 of the cut 121 through the front wall 108 and on the second side 103 of the bag 100h, an optional sixth row of perforations 124a connecting the end of the fourth row of perforations 122a and the fifth row of perforations 123a, and a cover 127 on the cut 121 and a small portion of the first row of perforations 122, the second row of perforations 123, the fourth row of perforations 122a and the fourth row of perforations 123a.
Referring to Figure 14, the rear side view of another embodiment of a "folded cut" bag is shown. As shown in Figure 14, the bag 10Oj has a first end 105 and a second end 1 10. It is useful to think of the first and second end 105 and 1 1 10 as the upper and lower end of the bag 100j, respectively. The bag 10Oj has a wall or a front surface 108, a wall or a rear surface 106, and two side walls 102 and 103. The bag 10Oj also has a seam 104 on the back side, or a wall or back surface. The seam 104 is produced when the bag 100 is formed using conventional methods known to those skilled in the art. Using such conventional methods, a material from which a 1 OOj bag will be formed (such materials are defined in greater detail below) are provided in a substantially flat sheet (refer to Figure 8 to Figure 13). The sheet is then directed and formed so that a portion of one side of the sheet is located on the other side of the sheet, as in the formation of a tube. The overlapping portions are then secured and sealed together, forming the seam 104. Those skilled in the art will appreciate that conventional techniques can be used to provide the side reinforcements in the bag 10Oj for each of the sides 102 and 103 during this training process.
The lower part (as shown in Figure 14) of the first end 105 of the bag 10 Oj has the portions 1 12a and 1 12b of the front wall or surface 108 of the bag extending beyond the body of the bag. bag 10Oj that the portions 1 14a and 1 14b of the material of the bag 10Oj forming the lateral reinforcements for the sides 102 and 103. In addition, the portions 1 14a and 1 14b of the lateral reinforcements extend beyond the body of the bag 1 OOj that the upper end 17 17 of the rear wall 106 of the bag 100j. As shown in Fig. 14, the back wall of the bag 10Oj has an upper end 17 that does not extend as far from the body of the bag 10 Oj as the end portions 1 14a and 1 14b of the side or back reinforcements. the end portions 1 12a and 1 12b of the front wall 15 of the bag 10Oj.
Now referring to Fig. 15, a top side view of a "folded cut" bag 100k is provided. For ease of reference, the same numbers are used in the figures to denote the same characteristics of the 100k bag. As shown in Figure 15, the bag 100k comprises multiple layers of the materials 220, 222 and 224. The first layer 220 is preferably a woven polymeric material, such as polypropylene, polyester, high density polyethylene, or polyethylene. The woven plastic layer 220 can be formed from woven strips of 25 plastic manufactured from the film to provide great resistance from relatively lightweight materials, and can also stretch to provide greater strength. For example, cross-laminated woven plastic film strips such as XF films are useful and commercially available from Valeron. Similarly, a biaxially oriented polypropylene plastic material is commercially available from AmTopp Division of Inteplast Group, Ltd. Those skilled in the art will appreciate that other materials, including various blends of polypropylene and polyethylene, can be used without departing from the scope of the invention.
Still referring to Figure 15, layer 222 is a coating or a lamination, preferably a polypropylene film. Layer 224 is preferably a polypropylene film oriented with reverse printing. The layer 224 may comprise the reverse printing of various labels, advertisements, warnings, and other information as may be desired, such as the cover 130 shown in Figure 15. Although not shown, those skilled in the art will appreciate that the upper side, the back side, and sides 102 and 103 of the bag 100 may contain images, patterns, or information as may be desired. Those skilled in the art will appreciate that the reverse printing of layer 224 can be achieved with conventional techniques, and with several conventional plastic films. One advantage of printing the lower portion of the front and / or rear panel is the provision of the information that It remains visible when the bag is on an exhibition shelf in a warehouse.
Still referring to Fig. 15, the underside (as shown in Fig. 15) of the bag 100k extends outwardly from the body of the bag 100k at the second end 10 of the bag 100k. As shown in Figure 15, the upper side of the bag 100k has an end portion 140 that extends along the width of the bag 100k. Each of the side reinforcements on the sides 102 and 103 of the bag 100k have the portions 142a and 142b that extend even further towards the second end 10 of the bag 100k than the end portion 140 of the upper side of the bag 100k. In addition, the lower side of the bag 100k has an end portion 110 extending beyond the end portions 142a and 142b of the side reinforcements. The end portion 10 of the bag 100k includes the portions 144a and 144b. As shown in Figure 15, the second end portion of the lower side of the bag 100k extends along the entire width of the bag 100k. Seam 104 is also shown.
Still referring to Figure 15, the exposed end portions 144a and 144b of the underside of the bag 100k can be covered with a durable glue. The glue can be applied to the selective surfaces, such as the portions 144a and 144b, or it can be applied in a line extending through the bottom side of the bag 100k along the second portion extreme 1 10, which includes the portions 144a and 144b. After the glue is applied, the sides 102 and 103 of the bag 100 are preferably folded together with the bottom side of the bag 100k so that at least a portion of the inner surface of the bottom side of the bag 100k is extend over the upper surface of the upper side of the bag 100k. Preferably, the portions 142a and 142b of the side reinforcements will be bent and joined to the upper surface of the upper side of the bag 100k, as well as the portions 144a and 144b of the second end 1 10 of the lower side of the bag 100k. The coating then seals the second end 1 10 of the 100k bag together. The first end 105 of the bag 100k can be sealed in a similar manner, if desired. Alternatively, the first end 105 or the second end 10 of the 100k bag can be sealed using a hot melt technique or any other technique well known to those skilled in the art.
Referring now to Figure 16, a detailed cross-sectional view of an end portion of the bag 100 is provided. As shown in Figure 16, at least a portion of the front side 130 of the bag 100 is now covered. by means of the lower edge potion 1 10 of the back side of the bag 100, the extended portions 142a, 142b of the side 102 of the bag 100, as well as a portion of the front part 130 of the bag 100 including the end portion 140 Once these portions are folded, the heat and pressure can be applied as appropriate to obtain and to ensure that the lower end 1 10 of the bag 100 is sealed in a durable manner, as with a conventional thermo-adhesive glue.
Once the bag 100 is sealed at one end, it can be filled with the desired materials. It has been found that a bag 100 with a height of 41 inches (104.1 cm) and a width of 28 inches (71 .1 cm) can durably contain at least about fifty (50) pounds (22.6 kg) of material without show undue stress, tearing, fracture or the like. It is believed that any bulk material may be contained in the bag 100, and the contents may weigh up to 100 pounds (45.3 kg), etcetera, without the undue risk of tearing or damage to the bag 100. Once the bag is filled 100, the second end needs to be sealed commonly. The second end of the bag 100 may be sealed in a similar manner as that described above for the lower end 1 10. Alternatively, the bag 100 may have its second end sealed by conventional means such as sewing. Still another method is to seal the second end of a shape like that described for the lower end 10 of the bag 100, and then to sew one of the two ends (not shown). Although not shown, those skilled in the art will understand and appreciate that a second end of the bag 100 can be sealed with conventional techniques once the 25 bag 100 has been filled with the selected amount of the material wanted.
Referring now to Figure 17, an isometric view of the bag 1700 is provided. As shown in Figure 17, the bag 1700 includes a front panel 1701, a first side panel with the reinforcements 1709, a second side panel with the reinforcements (not visible in Figure 17), an upper end 1703, and a lower end 1705. The bag 1700 is a folded cut bag as previously described, with a folded upper cut end 1703 and a lower cut end folded 1705. The pouch 1700 preferably has the weakened area (not shown in Figure 17) or other easy opening feature on at least one surface (not shown in Figure 17). As shown in Figure 17, the bag 1700 has been filled and sealed and contains one or more materials. Although the contents of the 1700 bag may be food, animal feed, other bulk items, the content may also include liquids or mixtures. Those skilled in the art will appreciate that the bag 1700, once formed in accordance with the present disclosure, can be filled and then the upper end 1703 or the lower end 1705 or both can be sealed as previously described. As shown in Fig. 17, the bag 1700, once it is filled, has a lower panel 1707 at the lower end 1705 thereof and an upper panel at the upper end thereof (not visible in Fig. 17). ). The 1700 bag can be stacked on top of Similar or different bags, such as at a grocery store, pet store, or other display location, such that panel 1707 is easily visible to a consumer. As shown in Figure 17, front panel 1701, first side panel 1709 and lower panel 1707 includes printing (and may also include graphics), and the skilled person will appreciate that the upper panel, the rear panel, and the second side panel of the bag 1700, which are not visible in Figure 17, may also include graphics and / or printing. Thus, the 1700 bag has six discrete areas for printing and / or graphics, each formed by a discrete surface of the 1700 bag. In addition, the printing and / or graphics can be spread across more than one panel, or of any combination of six panels (not shown). Panel 1707 may include graphics and / or printing, so that a consumer can quickly, easily and easily identify the brand of contents in the bag, such as the brand of pet food therein if bag 1700 contains the pet food. Alternatively, or additionally, the printing or graphics on panel 1707 may contain information such as price, composition, expiration date, and the like. In another mode, panel 1707 may contain the printing or graphics that provide the coupon or other discount on the price or other offer, either in the contents of the 1700 bag or in some other product.
Referring to Figure 18, the front side view of a "flush cut" bag embodiment 1001 a is shown: Bag 1001 a has a front wall 1010, a rear wall 101 1, a first side wall 1012, a second side wall 1013, an upper end 1014, and a lower end 1015. It will be clear, however, that the orientation of the ends 14 and 15 of the bag is unimportant and the references "top" and "bottom" are useful but may change depending on the orientation in which the bag is observed. The bag 1001 a is considered a "flush cut" bag because the front wall 1010 and the rear wall 101 1 are cut so that the ends of the front wall 1010 and of the rear wall 101 1 are essentially "at ras "among themselves; they have substantially the same length. The bag 1001 a also comprises an easy opening feature 1030 comprising a cover 1019 next to the single sealed fold 1016 (in other embodiments this could be a double fold) at the lower end 1015 of the bag 1001 a. In this embodiment, the cover 1019 comprises a first cut 1031 through the cover 1019 having a first end 1031 a and a second end 1031 b, a second cut 1032 through the cover 1019 having a first end 1032a and a second end 1032b, and a third cut 1033 through the cover 1019 extending from the first cut 1031 to the second cut 1032. This particular orientation of the cuts is also referred to as a "H" cut Although in this modality the "H" cut is located near the center of the cover 1019, the expert in the technician will understand that the "H" cut could be in any location along the cover , for example closer to the first side wall 1012 or to the second side wall 1013. The "H" cut may be formed by drilling, cutting, or through the use of a laser, or by any other technique known to those skilled in the art. The "H" cut provides a portion of the cover 1019 that is weakened This weakened portion can be opened with less force than that required to open or tear other portions of the cover 1019.
The bag 1001 a can be opened by pulling the portion of the cover 1019 at any (or both) end of the third cut 1033, which exposes a weakened area, for example, a cut, a series of perforations, or a marked line, in the front wall 1010 of the bag 1001 next to the single (or double) fold 1016 at the lower end 1015 of the bag 1001 a. This weakened portion can be opened with less force than that required to open or tear other portions of the bag 1001 a, including, but not limited to, the single (or double) sealed fold 1016. Although not shown in this embodiment, it will be understood that the first cut 1031 and / or the second cut 1032 may be larger or smaller, and may extend any distance from the first ends 1031 a and 1032 a and from the second ends 1031 b and 1032 b, respectively, of the first 1031 and the second 1032 cut toward the opposite side walls of the bag, for example, covering 50%, 75%, 90% or approximately 100% of the distance from the third cut to opposite sides of the bag.
Referring to Figure 19, a front side view of another embodiment of a bag 1001 b is shown. The bag 1001 b also has a front wall 1010, a rear wall 101 1, a first side wall 1012, a second side wall 1013, an upper end of the flush cut 1014, and a lower end of the folded cut 1015. The bag 1001 b also comprises an easy opening feature 1020 comprising a cover 1019, which in this embodiment is near the lower end 1015 of the bag 1001 b and comprises a complete cut 1021 in a triangular or carat shape having a first end 1021 a second end 1021 ba through the cover 1019. The bag 1001 b can be opened by pulling the complete cut 1021 through the cover 1019, exposing a weakened area, e.g., a cut, a series of perforations, or a line marked on the front wall 1010 of the bag 1001 b. The weakened area of the bag 1001 b can be opened with less force than that required to open or tear other portions of the bag 1001 b.
Referring to Figure 20, a front side view of another embodiment of the flush cut bag 1001 c is shown.
The bag 1001 c also has a front wall 1010, a rear wall 101 1, a first side wall 1012, a second side wall 1013, an upper end 1014, and a lower end 1015. The bag 1001 c also comprises an easy opening feature 1030 comprising a first cover 1019 covering a portion weakened from the bag 1001 c close to the single sealed fold 1016 (in other embodiments this could be a double fold) at the lower end 1015 of the bag 1001 a. In this embodiment, the first cover 1019 comprises a first cut 1031 through the first cover 1019 having a first end 1031 a and a second end 1031 b, a second cut 1032 through the first cover 1019 having a first end 1032 a and a second end 1032b, and a third cut 1033 through the first cover 1019 extending from the first cut 1031 to the second cut 1032. Again, this particular cut orientation is also referred to as an "H" cut. . In this embodiment, the "H" cut is covered by a second cover 1035 having a flange 1036. The pouch 1001 c can be opened by pulling the flange 1036, thus removing the second cover 1035 from the "H" cut. , and then by pulling the portion of the first cover 1019 at any (or both) end of the third cut 1033, which exposes a weakened area, eg, a cut, a series of perforations, or a marked line, on the wall front 1010 of the bag 1001 c near the simple fold 1016 (or double) sealed at the lower end 1015 of the bag 1001 c. This The weakened area can be opened with less force than that required to open or tear other portions of the bag 1001 c, including, but not limited to, the simple double 1016 (or double) seal.
Referring to Figure 21, a front side view of another embodiment of a bag 1001 d is shown. The bag 1001 d also has a front wall 1010, a rear wall 101 1, a first side wall 1012, a second side wall 1013, an upper end of the flush cut 1014, and a lower end of the folded cut 1015. The bag 1001 d also comprises an easy opening feature 1020 comprising a first cover 1019, which in this embodiment is near the lower end 1015 of the bag 1001 d and comprises a complete cut 1021 in a triangular or carat form having a first end 1021 a a second end 1021 ba through the first cover 1019. In this embodiment, the complete cut 1021 is covered by a second cover 1025 having a flange 1026. The pocket 1001 d can be opened by pulling the flange 1026, thus removing the second one. cover 1025 of the full cut 1021, and then pulling the complete cut 1021 through the first cover 1019, exposing a weakened area, for example, a cut, a series of perf sentences, or a marked line, on the front wall 1010 of the bag 1001 d. The weakened area of the bag 1001 d can be opened with less force than that required to open or tear other portions of the 1001d bag.
Referring to Figure 22, the front side view of a "folded cut" bag 1100a modality is shown. As shown in Figure 22, the bag 1100a has a first or upper end 1105 and a second or lower end 1110. Again, it will be apparent, however, that the orientation of the bag ends 1105 and 1110 is unimportant and the references "upper part" and "lower part" are useful but may change depending on the orientation in which the bag is observed. In the embodiment shown in Figure 22, both of the bag ends 1100a have a "folded cut". The bag 1100a has a wall or a front surface 1108 with the upper end 1116, a wall or a rear surface 1106, and two side walls 1102 and 1103. Those skilled in the art will appreciate that conventional techniques can be used to provide the side reinforcements in the bag 1100a for each of the sides 1102 and 1103 during this process. deformation. The first end 1105 of the bag 1100a has the portions 1112a and 1112b of the wall or rear surface 1108 of the bag extending further from the body of the bag 1100a having the portions 1114a and 1114b of the material of the bag 1100a which form the lateral reinforcements for the sides 1102 and 1103. Furthermore, the portions 1114a and 1114b of the lateral reinforcements extend beyond the body of the bag 1100a that the upper end 1116 of the front wall 1108 of the 1100th bag. As shown in Fig. 22, the front wall 1108 of the bag 1100a has an end portion 1116 at the first end 1105 of the bag that does not extend as far from the body of the bag 1100a as the end portions 1114a and 1114b of the bag 1100a. lateral reinforcements or extreme portions 1112a and 1112b of the rear wall of the first end 1105 of the bag 1100a. The bag 1100a also comprises an easy opening feature 1120 comprising a cover 1019 near the lower end 1110 of the bag 1100a. In this embodiment, the cover 1019 comprises a full cut 1121 in a rectangular shape having a first end 1121a and a second end 1121b through the cover 1019. The bag 1100a can be opened by pulling the complete cut 1121 through the cover 1019, exposing a weakened area, for example, a cut, a series of perforations, or a marked line, on the front wall 1108 of the bag 1100a. The weakened area in the front wall 1108 of the bag 1100a can be opened with less force than that required to open or tear other portions of the bag 1100a.
Referring to Figure 23, the front side view of another embodiment of a bag 1100b is shown. As shown in Figure 23, the bag 1100b has a first or folded upper cutting end 1105 and a second or lower cutting edge 1110. The bag 1100b has a wall or a forward surface 1108 with the upper end 1116 , a wall or a rear surface 1106, and two side walls 1102 and 1103. The first end 1105 of the bag 1100b has the portions 1112a and 1112b of the wall or rear surface 1108 of the bag extending beyond the body of the bag. bag 1100b having the portions 1114a and 1114b of the material of the bag 1100b forming the lateral reinforcements for the sides 1102 and 1103. In addition, the portions 1114a and 1114b of the lateral reinforcements extend beyond the body of the bag 1100b that the upper end 1116 of the front wall 1108 of the bag 1100b. As shown in Figure 23, the front wall 1108 of the bag 1100b has an end portion 1116 at the first end 1105 of the bag that does not extend as far from the body of the bag 1100b as the end portions 1114a and 1114b of the bag 1100b. the lateral reinforcements or the end portions 1112a and 1112b of the rear wall of the first end 1105 of the bag 1100b. In addition, the lower end 1110 of the bag 1100b is sealed using a single fold 1109 (in other embodiments this may be a double fold). The bag 1100b also comprises an easy opening feature 1130 comprising a cover 1019, close to the single fold 1016 (or double) sealed at the lower end 1110 of the bag 1100b. The cover 1019 comprises a first cut 1031 through the cover 1019 having a first end 1031a and a second end 1031b, a second cut 1032 through the cover 1019 having a first end 1032a and a second end 1032b, and a third cut 1033 through the cover 1019 extending from the first cut 1031 to the second cut 1032. Again, this particular orientation of the cuts is also referred to as an "H" cut. The bag 1 100b can be opened by pulling the portion of the cover 1019 at any (or both) end of the third cut 1033, which exposes a weakened area, for example, a cut, a series of perforations, or a marked line, in the front wall 1 108 of the bag 1 100b. The weakened area in the front wall 1 108 of the bag 1 100b can be opened with less force than that required to open or tear other portions of the bag 1 100b, including, but not limited to, single (or double) folding sealed 109 Referring to Figure 24, the front side view of a "folded cut" 1 100c bag embodiment is shown. As shown in figure 24, the bag 1 100c has a first or upper end 1 105 and a second or lower end 1 1 10. Again, it will be evident, however, that the orientation of the bag ends 1 105 and 1 1 10 is unimportant and that the references "upper part" and "lower part" are useful but may change depending on the orientation in which the bag is observed. In the embodiment shown in Figure 24, both of the ends of the bag 1 100c have a "folded cut". The bag 1 100c has a wall or a front surface 1 108 with the upper end 1 1 16, a wall or a rear surface 1 106, and two side walls 1 102 and 1 103. The Technical experts will appreciate that conventional techniques can be used to provide the lateral reinforcements in the bag 1100c for each of the sides 1102 and 1103 during this training process. The first end 1105 of the bag 1100c 5 has the portions 1112a and 1112b of the wall or rear surface 1108 of the bag extending beyond the body of the bag 1100c having the portions 1114a and 1114b of the bag material 1100c forming the lateral reinforcements for the sides 1102 and 1103. Furthermore, the portions 1114a and 1114b of the lateral reinforcements extend beyond the body of the bag 1100c as the upper end 1116 of the front wall 1108 of the bag 1100c. As shown in Figure 24, the front wall 1108 of the bag 1100c has an end portion 1116 at the first end 1105 of the bag that does not extend as far away from the body of the bag 1100c as the end portions 1114a and 1114b. of the side reinforcements or the end portions 1112a and 1112b of the rear wall of the first end 1105 of the bag 1100c. The bag 1100c also comprises an easy opening feature 1120 comprising a first cover 1019 near the lower end 1110 of the bag 1100c.
In this embodiment the first cover 1019 comprises a complete cut 1121 in a rectangular shape having a first end 1121a and a second end 1121b through the first cover 1019, and a second cover 1125 having a 25 tab 1126 that covers the complete cut 1121 in the first cover 1019. Bag 1100c can be opened by pulling tab 1126, thereby removing second cover 1125 from full cut 1121, and then pulling full cut 1121 through first cover 1019, exposing a weakened area, for example, a cutting, a series of perforations, or a marked line, on the front wall 1108 of the 1100c bag. The weakened area in the front wall 1108 of the bag 1100c can be opened with less force than that required to open or tear other portions of the bag 1100c.
Referring to Figure 25, the front side view of another embodiment of a bag 1100d is shown. As shown in Figure 25, the bag 1100d has a first or folded upper cutting end 1105 and a second or lower cutting edge 1110. The bag 1100d has a wall or a forward surface 1108 with the upper end 1116 , a wall or a rear surface 1106, and two side walls 1102 and 1103. The first end 1105 of the bag 1100d has the portions 1112a and 1112b of the wall or rear surface 1108 of the bag extending beyond the body of the bag 1100d having the portions 1114a and 1114b of the material of the bag 1100d forming the lateral reinforcements for the sides 1102 and 1103. In addition, the portions 1114a and 1114b of the lateral reinforcements extend beyond the body of the bag 1100d than the upper end 1116 of the front wall 1108 of the bag 1100d. As shown in figure 25, the front wall 1108 of the bag 1100d has an end portion 1116 at the first end 1105 of the bag that does not extend as far from the body of the bag 1100d as the end portions 1114a and 1114b of the side reinforcements or the end portions 1112a and 1112b of the rear wall of the first end 1105 of the bag 1100d. In addition, the lower end 1110 of the bag 1100d is sealed using a single fold 1109 (in other embodiments this may be a double fold). The bag 1100d also comprises an easy opening feature 1130 comprising a first cover 1019, which in this embodiment is close to the single fold 1016 (or double) sealed at the lower end 1110 of the bag 1100b. The first cover 1019 comprises a first cut 1031 through the first cover 1019 having a first end 1031a and a second end 1031b, a second cut 1032 through the first cover 1019 having a first end 1032a and a second end 1032b, and a third cut 1033 through the first cover 1019 extending from the first cut 1031 to the second cut 1032. Again, this particular orientation of the cuts is also referred to as an "H" cut. The bag 1100d also has a second cover 1135 having a flange 1136 that covers the "H" cut. The bag 1100d can be opened by pulling the tab 1136 thus removing the second cover 1135 from the "H" cut, and pulling the portion of the first cover 1019 at any (or both) end of the third cut 1033, which exposes the area weakened, for example, a cut, a series of perforations, or a marked line, in the front wall 1 108 of the bag 1 100c. The weakened area in the front wall 1 108 of the bag 1 100c can be opened with less force than that required to open 5 or to tear other portions of the bag 1 100c, including, but not limited to, single (or double) fold ) sealed 1 109.
The experts in the art will understand and appreciate that the bag according to the invention may vary in size, dimensions, and shape without departing from the scope of the invention, and that the above description of the preferred embodiments is not intended to limit the scope of the invention. of the invention as defined in the claims. For example, those skilled in the art will understand and appreciate that the anterior bag 1 or the bag 100 may have the ends sealed and sewn into a tubular bag 15 with the lateral reinforcements as shown, or a lower part and an upper part of the bag. block, or a combination thereof, even if they are not displayed. Those skilled in the art will also appreciate that a weakened portion or area can be provided in a number of ways that can vary from those described and expressly shown, such as by tightening the portions of the bag wall or not deforming, punching, or cutting. the same, as well as by varying the size, number, depth, and / or pattern of perforations, cuts, and / or deformations in a wall of the bag. Similarly, the 25 skilled in the art will understand that bag 1 can provided with a reusable opening (not shown) or a patterned portion adapted to allow a person to easily pour the contents of the bag 1 (not shown), or a combination of these two characteristics. Such characteristics are conventional with the bags of the state of the technique.
Similarly, those skilled in the art will appreciate that terms such as "front" and "rear" and "top" and "bottom" are useful in describing a bag, but will essentially depend on the orientation of a bag when They use such terms, and therefore are not limited in the orientation of a bag.

Claims (40)

  1. CLAIMS 1 . A bag comprising a front wall, a back wall, an inner surface, an outer surface, an upper end, a lower end, a first layer and a second layer, each of the front wall and the rear wall has a surface interior, an outer surface, an upper end and a lower end, wherein the first layer comprises a woven polymer and the second layer comprises a film attached to the first layer, and wherein the bag comprises an easy opening feature comprising a cover With a first weakened area, the easy opening feature is located over a second weakened area in the front wall of the bag, the back wall of the bag, or a combination thereof. 2. The bag according to claim 1, wherein the first layer comprises polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. 3. The bag according to claim 1, wherein at least a portion of the second layer comprises an area printed thereon. 4. The bag according to claim 1, wherein the second layer comprises polypropylene, polyethylene, polyethylene terephthalate, polyamide, oriented polypropylene, polypropylene biaxially oriented, oriented polyethylene, biaxially oriented polyethylene, oriented polyethylene terephthalate, biaxially oriented polyethylene terephthalate, oriented polyamide, biaxially oriented polyamide, coated paper or any combination thereof or paper. 5. The bag according to claim 1, further comprising a third layer between said first layer and said second layer. 6. The bag according to claim 5, wherein said third layer is a glue. 7. The bag according to claim 1, wherein the first layer and the second layer are laminated together. 8. The bag according to claim 1, wherein the easy opening feature comprises a cover having 15 a first surface and a second surface and a glue on at least a portion of the first surface, the second surface, or both. 9. The bag according to claim 1, wherein the first or second weakened area comprises a cut that 20 has a first end and a second end, where the cut penetrates through at least a portion of the bag or the cover. 10. The bag according to claim 9, wherein the cut comprises a carat, a semicircle, an open square, 25 or an open rectangle. eleven . The bag according to claim 9, wherein the first or second weakened area further comprises a second cut having a first end and a second end. 12. The bag according to claim 1, wherein the first cut and the second cut intersect. 13. The bag according to claim 12, wherein the first cut and the second cut comprise an "X" shape. 14. The bag according to claim 1, wherein the first cut and the second cut comprise the parallel lines. 15. The bag according to claim 1, wherein the first or second weakened area further comprises a third cut. 16. The bag according to claim 15, wherein the first cut, the second cut and the third cut comprise an "H" shape. 17. The bag according to claim 9, further comprising a plurality of perforations extending from the first end or from the second end of the cut, where the plurality of perforations penetrates through at least a portion of the bag or the bag. the cover. 18. The bag according to claim 17, comprising a plurality of perforations extending from the first end of the cut and a plurality of perforations extending from the second end of the cut. 19. The bag according to claim 1, wherein the first or second weakened area comprises a plurality of perforations penetrating through at least a portion of the bag or the cover. 20. The bag according to claim 19, wherein the plurality of perforations forms a line. twenty-one . The bag according to claim 19, wherein the plurality of perforations defines a shape. 22. The bag according to claim 1, wherein the first or second weakened area comprises a deformation in at least a portion of the bag or the cover. 23. The bag according to claim 22, wherein the first or second weakened area further comprises a 15 cloven mark. 24. The bag according to claim 1, wherein the first weakened area comprises a cut having a first end and a second end or a plurality of perforations, wherein the cut or plurality of perforations penetrate through 20 of at least a portion of the cover, or a deformation in at least a portion of the cover, and the second weakened area comprises a cut having a first end and a second end or a plurality of perforations, where the cut or the plurality of perforations penetrate through so 25 minus a portion of the bag, or a deformation in at least minus a portion of the bag. 25. The bag according to claim 1, wherein the cover comprises a polymer, a film, an adhesive, a paper, or any combination thereof. 26. The bag according to claim 1, further comprising a second cover covering at least a portion of the weakened area of the cover. 27. The bag according to claim 26, wherein the second cover comprises a polymer, a film, an adhesive, a paper, or any combination thereof. 28. The bag according to claim 27, wherein the second cover comprises a piece of tape. 29. The bag according to claim 1, wherein at least a portion of the lower end of the back wall is 15 projects beyond the lower end of the front wall. 30. The bag according to claim 29, wherein the lower end portion of the rear wall projecting beyond the lower end of the front wall is sealed to the external surface of the lower end of the front wall. 20 31. The bag according to claim 1, wherein the bag further comprises a first side wall having an inner surface, an outer surface, an upper end and a lower end, and a second side wall having an inner surface, an outer surface , an upper end and 25 a lower end, where the first side wall and the second Side wall also include reinforcements. 32. The bag according to claim 31, wherein at least a portion of the lower end of the rear wall projects beyond the lower end of the first wall. 5 side and bottom end of the second side wall, and the lower end of the first side wall and the lower end of the second side wall project beyond the lower end of the front wall, and where the lower end portion of the rear wall projecting beyond the lower end of the first side wall and the lower end of the second side wall, and the lower end portion of the first side wall and the lower end of the second side wall that is projecting beyond the lower end of the front wall, they are sealed to the external surface of the lower end of the front wall. 33. The bag according to claim 1, wherein the upper end and the lower end of the bag are sealed, and wherein the bag comprises at least ten pounds (4.5 kg) by weight of a filling material. 34. The bag according to claim 1, wherein at least the portions of the outer surfaces of each of the front wall and the rear wall comprise a plurality of discrete areas that additionally comprise printing thereon. 35. The bag according to claim 1, wherein a The portion of the front wall and a portion of the rear wall combine to form a discrete portion of the bag located at or near the upper end or lower end, where the discrete portion of the bag comprises printing on it. 36. The bag according to claim 35, wherein at least a portion of the front wall or the rear wall projects beyond a corresponding portion of the other, thereby defining a folded bottom bag at the upper end or at the lower end of the bag. 37. A method for manufacturing a woven polymer bag with an easy opening feature, comprising joining a cover with a first weakened area on a second weakened area of the woven polymer bag. 38. The method of claim 37, wherein the first or second weakened area is a cut, a plurality of perforations, or a marked line. 39. A bag comprising a front wall, a back wall, a first side wall, a second side wall 20, an interior surface, an exterior surface, a first end, a second end, a first layer and a second layer, the front wall , the rear wall, the first side wall and the second side wall having an interior surface, an exterior surface, a first end and a second End, where the first layer comprises a woven polymer and the second layer comprises a film laminated to the first layer, wherein the first end of the front wall projects beyond the first end of the first side wall and the first end of the second side wall, and the first end of the first side wall and the first end of the second side wall projects beyond the first end of the rear wall, where the bag comprises the impression on the front wall, the first side wall, the rear wall, the second side wall, the first end, the second end, or any combination thereof, and wherein the bag comprises an easy opening feature comprising a cover comprising a first weakened area located on a second weakened area in the front wall of the bag, the rear wall of the bag. bag, the first side wall of the bag, the second side wall of the bag, or any combination thereof, and a second cover located on top of the bag. the first weakened area of the roof. 40. A bag comprising a front wall, a back wall, a first side wall, a second side wall, an interior surface, an exterior surface, a first end, a second end, a first layer and a second layer, the front wall, the rear wall, the first side wall and the second side wall having an inner surface, an outer surface, a first end and a second end, wherein the first layer comprises a woven polymer and the second layer comprises a film laminated to the first layer, wherein the first end of the front wall projects beyond the first end of the first side wall and the first end of the second side wall, and the first end of the first side wall and the first end of the second side wall projects beyond the first end of the rear wall, where the bag comprises the impression on the front wall, the first side wall, the rear wall, the second side wall, the first end, the second end, or any combination thereof, and wherein the bag comprises a weakened area in the front wall of the bag, the back wall of the bag, the first side wall of the bag, the second side wall of the bag, or any combination thereof, and a cover located over the weakened area of the bag.
MX2014009770A 2012-02-13 2013-02-13 Easy open woven plastic bags. MX352800B (en)

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US13/372,211 US9845184B2 (en) 2012-02-13 2012-02-13 Easy open plastic bags
US13/682,289 US9969529B2 (en) 2012-02-13 2012-11-20 Easy open plastic bags
PCT/US2013/025891 WO2013123015A1 (en) 2012-02-13 2013-02-13 Easy open woven plastic bags

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MX2019000663A MX395321B (en) 2012-02-13 2013-02-13 EASY-OPEN WOVEN PLASTIC BAGS.
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